1 - 8 of 8 articles
We review our recent approximation scheme to calculate the normal-superconducting phase boundary, T
c(H), of a superconducting wire network in a magnetic field in terms of interacting loop currents. The theory is based on the London approximation of the linearized Ginzburg-Landau equation. An...
Peculiarities of point-contact spectra behavior of antimony are investigated in a magnetic field. It turns out that the singularities in the spectra can both decrease and increase depending not only on orientation of the contact axes with respect to the crystallographic axis of Sb and the...
A specific type of plasticity induced by complicated pointlike thermally-induced defects is proposed. In this case it is possible to derive a system of hydrodynamic equations describing bulk crystal dynamics and a set of boundary conditions for them for both crystal-crystal and crystal-liquid...
A self-consistent microscopic theory for the 2D Hubbard Hamiltonian and additional electron-phonon interaction yields below T
c a gap in the quasiparticle decay rate as well as in the spin and charge fluctuation spectra. The mass enhancement and the quasiparticle decay rate exhibit in the normal...
We have extended the Ambegaokar, Halperin, Nelson and Siggia theory of vortex de-pairing in two-dimensional superfluids to describe how the current of free vortices varies with superfluid velocity, v
s, in the steady state, for temperatures just above the Kosterlitz-Thouless transition. To do so...
The overpressurization of superfluid He4 under crystallization is studied experimentally. The effect of a substrate and He3 impurities on the nucleation rate W is observed. The dependence of the metastable state lifetime versus the overpressurization and temperature is measured in the range...
The kinetic theory of first sound in a quantum liquid is presented. The results for velocity and sound attenuation are obtained and found to be valid over a wide range of frequencies, including hydrodynamic, kinetic, and intermediate regimes, and throughout the whole temperature range in which a...
The first ever band-structure calculations performed for the intermetallic compounds ABi2 (A =K, Rb, Cs) using the Linear Muffin-Tin Orbital Method are reported in this paper. Metallicity in these compounds is found to be primarily due to the A-Bi bonding and the density of states at the Fermi...
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